From ICT4D Wiki
http://www.itu.int/ITU-D/ict/publications/world/world.html
The World Telecommunication Indicators Database contains time series data for the years 1960, 1965, 1970 and annually from 1975-2004 for around 80 sets of telecommunication statistics (updated) covering telephone network size and dimension, mobile services, quality of service, traffic, staff, tariffs, revenue and investment.
Selected demographic, macro-economic, broadcasting and information technology statistics are also included.
Data for over 200 economies are available. Notes explaining data exceptions are also included. The data are collected from an annual questionnaire sent out by the Telecommunication Development Bureau (BDT) of the ITU. Additional data are obtained from reports provided by telecommunication ministries, regulators and operators and from ITU staff reports. In some cases, estimates are made by ITU staff; these are noted in the database.
Developed by the International Telecommunication Union
